fix(media): 修复emby电影库混入剧集/特别篇识别/剧集合集 + 新增手动编辑元数据

emby 兼容层(hills/yamby 等客户端):
- 电影库不再混入剧集:filterLikelyEpisodicPathsFromMovieQuery 按路径
  特征(Season/S0x/Specials/电视剧/日番/国漫等)剔除误入电影库的剧集
- itemPayload 改用 mediaShouldBeEpisode:有季集号且(属剧集库或路径像剧集)
  才标记为 Episode,修正电影库里剧集被当成 Movie

特别篇识别:
- episode_parser 新增 patSpecialSeason,识别 S0/Season 0/Specials/SP/OVA/
  OAD/番外/特别篇/特典 文件夹 → 第0季;seasonFromParents 返回 found 标志,
  区分"明确第0季"与"未识别默认第1季"
- emby seasonDir 正则同步支持 Specials/SP/OVA/特别篇 等

剧集合集:
- groupSeries 抽出 isSeriesCard,卡片链接按是否剧集判定,修复剧集卡片
  跳转;每集分离的根因(季集号/分组key)随入库识别修复一并改善

手动编辑元数据(自采集视频无TMDB信息时可自定义封面/标题/简介/分类):
- 新增 MediaService.UpdateMetadata + PATCH /media/:id/metadata(需admin)
- 前端 MetadataEditDialog 接入 LibraryPage 与 MediaDetailPage

其他:scanner/scraper/nfo/local+cloud_metadata/adult 元数据识别配套改进;
.gitignore 忽略本地 .dev-cache/.dev-data 运行产物。

internal/service/adult_scraper_test.go

@@ -2,7 +2,16 @@ package service
 
 import (
 	"context"
+	"net/http"
+	"net/http/httptest"
 	"testing"
+
+	"github.com/glebarez/sqlite"
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+	"github.com/ShukeBta/MediaStationGo/internal/repository"
 )
 
 func TestNormalizeAdultCode(t *testing.T) {
@@ -59,6 +68,49 @@ func TestParseAdultDetailHTMLDerivesDMMPoster(t *testing.T) {
 	}
 }
 
+func TestAdultProviderUsesConfiguredMultipleSources(t *testing.T) {
+	bad := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.Error(w, "temporary failure", http.StatusInternalServerError)
+	}))
+	defer bad.Close()
+
+	good := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/search":
+			w.Header().Set("Content-Type", "text/html; charset=utf-8")
+			_, _ = w.Write([]byte(`<a class="box" href="/v/ssis001"><strong>SSIS-001 多源入口</strong></a>`))
+		case "/v/ssis001":
+			w.Header().Set("Content-Type", "text/html; charset=utf-8")
+			_, _ = w.Write([]byte(`<h2 class="title"><strong>SSIS-001 多源命中标题</strong></h2><img class="video-cover" src="/cover.jpg">`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer good.Close()
+
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.APIConfig{}); err != nil {
+		t.Fatal(err)
+	}
+	apiConfig := NewAPIConfigService(zap.NewNop(), repository.New(db), NewCryptoService("", zap.NewNop()))
+	baseURL := bad.URL + "\n" + good.URL
+	if _, err := apiConfig.Update(context.Background(), "adult", APIConfigPatch{BaseURL: &baseURL}); err != nil {
+		t.Fatal(err)
+	}
+
+	provider := NewAdultProvider(zap.NewNop(), apiConfig)
+	match, err := provider.Search(context.Background(), "SSIS-001")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if match == nil || match.Title != "多源命中标题" || match.OriginalName != "SSIS-001" || !match.NSFW {
+		t.Fatalf("multi-source adult match = %+v", match)
+	}
+}
+
 func TestAdultSourceKindRecognizesJavBusMirrors(t *testing.T) {
 	cases := map[string]string{
 		"https://javdb.com":       "javdb",